Any item of clothing should be tried before you buy- Shorts- Tops- Gloves and in particular helmets- If it ain'y comfy- you ain't going to wear it.

I do a lot of online buying- but never for clothing.

Once you have the essentials to get you riding- The best "Toy" you can get for a bike is a computer. Won't help riding but does help to confirm that you are not as fit as you'd like to be. Then again- it will show how much fitter you are in a years time.