Hi! Although it can depend on which area you live in, you need to have had at least five years commercial experience to become a lecturer. The teaching qualifications are studied for whilst you are actually teaching, as you have to have a certain number of teaching hours for each course (the hours have just increased, it was 30 hrs for stage one, and 60 hours for stage two).
There is an introduction to teaching certificate you can take that does not require teaching hours, but teached you the basics of lesson planning, schemes of work, lesson objectives etc, as well as some of the theories to teaching.
If you are lucky, the college you teach for may pay for the teaching courses if you are working a fair few hours for them.If there are no positions available, you could offer to do some shadow teaching for a couple of hours a week (FOC), but at least you could get on to a teaching course.
The assessors award can also only be undertaken when you are teaching, but usually only entails a few meetings rather than a lesson every week, as the work is collated through the lessons you teach/are training as a trainee assessor.
If you have any more qu's feel free to pm me. you may want to start looking now thou, as teh stage one courses normally begin late sep./oct time.
Hths xx