im thinking of starting up my fitness clothing line any advice?
Number one thing in starting any business is to have a business plan and executing it. I would try consulting some current business/owners or any mentors you had in the past with more specific questions. Also, make sure you have an investor to back you and good credit because you will not be able to finance the entire business yourself. If you need help outlining a business plan, read this
http://www.sba.gov/writing-business-plan
Also I hate to get all sales-y here, but I do write linkedin blog that cover these topics. Check them out, they certainly might help
https://www.linkedin.com/pulse/article/20140828142526-144276504-in-busin…
https://www.linkedin.com/pulse/article/20140814150501-144276504-ideas-ke…
Hope this helps,