Article: If you're not already connected to Wi-Fi, you'll need to connect now. See How to Get Internet on the iPod Touch if you need help getting online. It's the white icon with a blue compass inside. You'll usually find it on the home screen. This opens your web browser. It's the wide gray bar at the top of the screen. This springs open the keyboard. The Search key is at the bottom-right corner of the keyboard. This opens the mobile web version of YouTube. To browse, swipe down and check out recommended videos, or tap the flame icon at the top of the page (in the red bar) to see what's trending. To search, tap the magnifying glass icon near the top-right corner of the screen, type what you're looking for, and then tap the Search key. The video will start to play. The free version of YouTube is ad-supported, which means you may have to watch an ad before the video will play. Sometimes you'll have the option to skip the ad by tapping a Skip Ad button at the bottom of the video.
Question: What is a summary of what this article is about?
Connect your iPod Touch to the internet. Open Safari. Tap the address bar. Type youtube.com into the address bar and tap the Search key. Browse or search for a video. Tap the video you want to watch.

Problem: Article: The buttons and valves on the trumpet have the largest impact on changing notes, but your embouchure is important too. Tighten your embouchure when playing high notes and loosen it when playing low notes. Without your mouthpiece or trumpet, practice tightening and loosening your embouchure and notice how the pitch of the buzz changes. This effect is amplified when blown through the horn. Next, practice with just the mouthpiece and notice the siren-like sound you can make by changing the embouchure shape. Your embouchure is not effective when you don't have enough air. Sitting up straight keeps your airways open so that you can blow with enough force to produce the full scale of notes. Good posture also keeps your trumpet raised. Slump down in your chair and notice how you can't breathe as deeply as when you are sitting upright. Practice good posture when you aren't playing so you get used to sitting up straight. Your lips will get tired easily when you are first learning your embouchure. Practice holding it for a few minutes. Then practice buzzing for a few minutes. Add a little bit of time each day so you can build up your endurance. Since many musical pieces are five to ten minutes or longer, it's important that you can buzz your lips for a long time without getting tired. If you are having trouble with a particular part of the embouchure, look for videos that describe that part or the whole process. Watching someone form the embouchure may give you a better idea than reading about it. Ask a teacher or mentor if they have any videos you could borrow, or search online for videos. You'll also be able to see the way players hold the trumpet and sit. If you are in a band class at school, or take lessons with a mentor, ask them to look at your embouchure or listen as you play to see what you are doing wrong. They will be able to help you with specific problems you are facing with your embouchure. If you don't have anyone to ask, find a local instructor who would be willing to help you out. You may be able to get some quick tips without taking a full, paid lesson.
Summary: Adjust your embouchure for different notes. Maintain upright posture. Practice buzzing your lips everyday. Watch instructional videos. Ask an instructor for tips.

Oaks, which all fall under the genus (Quercus) are wide-spread trees found in temperate climates the world over. There are over 600 known species of Oak, with 55 found in the continental United States. Because there is such a wide variety of oak trees in the world, it can be hard to find characteristics that unite them all. However, they do exist: Acorns are the easiest way to spot an oak tree. If the tree produces acorns, it's an oak. Lobed leaves are leaves that have rounded or pointed knobs extending out from the center line. While a few oaks do not have lobes, all of the leaves are generally symmetrical around a clear median line. Small, scaly bark. Bark on oak trees is variable, but it is generally made up of small, hard, and scaly bits of bark. This is unlike the large, flaky chunks of pines or the wallpaper-like bark on birch trees, and is much more cracked and grooved. Lobes are the bits of leaf that extend out to each side from the center of the leaf, like points on a star. White oaks have rounded lobes while red oaks have pointed ones. This is an important distinction that will cut the number of potential trees you're trying to identify in half. On red oaks, the vein of the leave extends all the way out to the edge, creating this point. Each area has its own assortment of oak species, which is often drastically different from other areas. The species of oak you will encounter changes great depending on where you are in the world, as it is rare for an oak found on the east coast to be found in the west, a southern oak in the north, etc. You can generally figure out your region with a few criteria (examples here are for Continental US): General location -- Northeast, Southeast, Midwest, Northwest, Southwest Inland or coastal. Mountainous or flat terrain. The lobes are the sections that extend out from the center of the leaf's stem on both sides. If possible, compare multiple leaves to find the average number of lobes. A few species such as the willow oak have no lobes at all, but most oaks have multiple lobes. Count at least 4-5 leaves when identifying, as this will help when you turn to the field guide. Look at the area between the lobes and determine whether the indentations are deep or shallow. White oak leaves often have variable indentations that alternate randomly between shallow and deep, where red oaks can have dramatic, sharp indentations or none at all. The leaves of evergreen oaks are shiny and dark green all year, but most oaks will turn colors in autumn. Some oaks, such as scarlet oak (Quercus coccinea), sport brilliant colors in the fall. White oaks and chestnut oaks are often a dull brown when color comes around. If it's summer, look at whether the leaves are dark green or light green, and whether they're shiny or not, to help determine the species. Evergreen oaks and a couple red oaks such as scrub oak have smaller leaves while most red oaks and nearly all deciduous white oaks have much larger leaves (at least 4 in.). This is one of the more important distinguishing features between similar species of oak. Using the data you've collected, identify your oak tree using a tree manual or field guide. There are dozens and dozens of oak trees out there, and you can't he expected to know them all by heart. Use the above criteria to narrow down your choices, then use the guide to find what oak you're looking at. You can look through the collection of common oak trees below, or consult a Field Guide, found through the US Forestry Service. Turn to the appropriate section. Most guides are divided into a red oak section and a white oak section Narrow your selection down to the oaks specific to your area. A good guide should have distribution maps for each species. Once you have a list of possibilities, look at the pictures for each one to determine your tree.
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One-sentence summary --
Differentiate oak trees from other species. Look at the tips of the lobes to determine if you have a red or white oak. Consider your geographical region. Count the lobes on each leaf. Measure the indentations between the leaves. Look for color changes in the fall. Measure the overall size of the leaves. Identify any unknown oaks using a Field Guide by the US Forestry Service.