You can find information regarding the job outlook, training requirements, advancement opportunities, compensation, etc. of this profession on the website of the Bureau of Labor Statistics (bls.gov/oco/ocos325.htm).
If you are looking for recommendations on schools, then I’d suggest the
pharmacy technician course offered by Career Step. The course is delivered online, costs under $2k and provides students an opportunity to complete their externships through name brand pharmacies like Walgreens and CVS.