Problem: How to tell if a goat is pregnant
Wash your hands first.
Thoroughly wash your hands with soap and warm water. Make sure to scrub for at least 20 seconds.

Answer: You can introduce bacteria to the goat, which have open glands around the teat. Plus, you don't want to introduce excess bacteria to the milk sample.

Problem: How to grow your children's names with garden cress
Draw your children's names in the dirt using a trowel or stick.
If the soil is weedy or hard, weed it and dampen it first.
If the children are old enough, have them perform this step.

Answer: Plant cress seeds in the name area only. There should be little depressions where you have drawn the names in the soil.

Problem: How to buy a used horse trailer
Consider your budget.
Budget is probably going to be the most limiting factor in buying a used horse trailer. How much you have to spend is going to narrow your choices.
Answer: If budget is not a concern, then you can buy a horse trailer with all sorts of modern features such as dressing rooms, interior lighting, padded dividers and more. A lower budget might limit your choice to a horse trailer that is structurally sound, but not very attractive.