Whats the best advice to progress onto TT bars? Ive just started TT on my road bike and looking at slowly adding components to improve my time....aero bars seem next logical step but need some advice on how to progress? Thank you
I followed a similar path.  I was road riding then entered into a couple of TT's.  I soon thereafter bought aerobars off of Ebay.  Riding at that angle is different and takes a little getting used to.  I then decided to get a TT bike, but instead of just buying one, I bought a frame and all parts on line, mostly from Ebay, scouring for the best prices on what I wanted that were either slightly used (mostly) or new.  I ended up saving almost $4,000 doing it this way instead of buying a ready to go bike and I learned a lot in the process.  I did have my local bike shop put it all together for around $100.
Good luck.