Problem: How to clean grout with vinegar
Apply vinegar to the grout.
Use a vinegar-soaked cloth or a spray bottle filled with vinegar to coat the grout you wish to get clean. If you are trying to clean grout on a vertical surface, a spray bottle is probably your best bet.

Answer: After applying the vinegar, wait ten minutes before moving on to the next step. Always use distilled white vinegar or specialized cleaning vinegar to clean grout.

Problem: How to start an ab workout
Start with butterfly crunches.
This is a simple yet effective move that targets the rectus abdominis-the 6-pack area-and is great for beginners.
Lie on your back with the soles of your feet together as close to your body as possible, with knees bent out to sides.

Answer: Place your hands beside your ears to keep yourself from yanking on your neck. Keeping your back flat on the floor and stomach muscles contracted, exhale and curl your chest up a few inches off the floor toward your legs.

Problem: How to get unbanned from a web forum
Read your ban message.
If it says you have been blocked forever, then you want to follow the below steps. If it says the ban will eventually expire (for example, a 1 week ban on the 1st would expire on the 8th), then you may want to wait until it expires.
Answer: Read the reason for your ban closely. The reason will help you to understand what to avoid doing in the future, if your ban was justified.