Processing and improving vocals

Hi, I would like to start the adventure with recording and processing vocals in Ardour (I did it in Audacity before), but I don’t know how to do it and where to start. I have already found many plugins, but I have a problem with, for example, connecting “regions”, each has several recorded verses. I would also like to mix and master my future songs. Is there a person here who has already gone through this stage and could give me some advice?