In search of guides not to lose

[ZhakNait]

Hi everyone, I recently downloaded WC3 again to play custom campaigns (an excellent game that my PC can run) and stumbled upon the fact that I get beaten many times in base building missions.

For that reason, I want to request guides (preferably extensive) on how to build a good base and which troops (of different races) use to resist sieges, invade, etc.

PD: I open this thread after browsing the forums and only find programming guides, modeling, etc.
PD2: Sorry for writing English, use translator