you should fit right in, you sound like many of us. There is a ton of stuff you can search on just about any leather topic. on tooling and stamps some styles, for example Sheridan style tooling uses stamps designed for that style; others are similar but not the same. What i did was study one style of tooling at a time, which was Stohlman first. most of the patterns tell you what stamps the pattern takes, so you can buy them one pattern at a time and have some luck in reproducing the intended pattern accurately, as well as learning how they work together and learning the style.
AS for taking your time, that's the hard part to learn lol you just have to quit when you get in a bind and think about it. come back the next day with a new outlook. And tooling always looks better after it's finished, so don't give up until you have it stained, sealed, and buffed out It will surprise you.
My old driller used to say I worked faster than I could think, lol, he would tell me to go get a cup of coffee and think about it, then come back and finish. Worked every time !!
Life is good!!