I have the Prima Guide, and it says I can complete as many radiant quests I want before starting the next critical path quests, but after I completed the first major quest and one radiant quest I was redirected to Skjor for anther major quest. Same after the second.

Will I be able to complete all of the rdiant quests, or there is a limit of only one after each major quest?

Here is the list of quests:
http://www.uesp.net/wiki/Skyrim:Companions

Thanks.

You can never complete all radiant quests. They're generated on the fly, so they have an unlimited number.