The soldering process can be imagined as micro-welding in which pieces of metal are added together using a filler material, i.e. solders at low temperature. Taking time to skilfully and carefully solder electric parts ensures that circuits work the first time round. To learn better, you can also opt for online soldering training.
Heat shrinks are essential for connecting the circuit wires. If there is no clip-on available, you can use a plier as a choice. When the complicated circuits are gathered, this is a good practice to ensure that the joints are in place after the soldering is done. You need to keep the iron tip perfectly clean. This is a clear sign of perfect joint and better heat conductivity. Before connecting the bigger parts, start with soldering diodes, terminals, and resistors along with other parts. This will make the entire process easy for you.