First engine build question

I'm still learning so I appreciate all these drown out threads. I want to understand the whole process. I know alot of you guys have been there done that a million times it it's annoying to answer the same questions over and over but for the guys like me who havent build 100 engines and don't know we are still learning and need answers to the little question. There are 2 types of car ppl.
1) the ones that drop there engines and cars off at a shop and let someone else do the work
2)the diy that does all that he can himself
I fall into 2 I'm trying to learn all I can I know alot of the learning process is trial and error. But with all the wealth of knowledge here alot of error can be avoided.