I found the eevblog tutorial videos very helpful in setting up my office for soldering and getting comfortable doing through hole soldering, connecting wires etc.
Part 3 is surface mount which I don't do much. A friend I had who is a skilled assembler turned me on to chipquik flux and kapton tape to hold down the parts and that helped immensely
Part 1 https://www.youtube.com/watch?v=J5Sb21qbpEQ Part 2 https://www.youtube.com/watch?v=fYz5nIHH0iY
Part 3 is surface mount which I don't do much. A friend I had who is a skilled assembler turned me on to chipquik flux and kapton tape to hold down the parts and that helped immensely