How do a realtor build a strong network of contractors

[Johny Michaud]

I'm just getting into the real estate industry and wanted to know how to build a network of contractors.  I started to use craigslist but, some of the contractors that I was getting were not as reliable.  Any help would be great.  I was thinking of looking for contractors that do a lot of kitchen and bathroom renovations since those are big ticket items (home value). 

thanks

[Johny Michaud]

thank you guys, I'll start by asking some of the more experience real estate agents and f friends on who they would recommend. So far, I have spoken to six contractors from references that I've gotten.