Take out the first ingredients you'll need. I started when I was about 20 or 21 years old, my first serious food was a chocolate cake. Most people would prefer ramen noodles or pasta, but the cake was my choice because I've watched my aunt make it several times and, quite frankly, I really wanted to eat cake. Of course, you have to do these conversions before writing in your cookbook because you must have the final recipe, the one you should follow when cooking, you can't do the conversions while you cook.
You can always do the measurements with a small scale. They are not expensive and are very useful for cooking. So if you're just starting to cook, make sure to buy a small scale first. In addition, I have a variety of cups, the set has from 1 cup to ½ tablespoon.
If you want to make things easier, then one of these mug sets will come in handy. The first step in any recipe is “mise en place” in French, which means gathering the ingredients. This seems like a no-brainer, but you'd be surprised how many people try to start cooking without making sure they have everything they need. This step is important because it helps the ingredients cook evenly and prevents them from sticking together.
The goal is to make the 5 steps of cooking (preserving, preparing, cooking, serving and washing dishes) simple and consistent.