Hello & welcome. I did the same as you, got back into biking after 15 years+. Now been riding for about 6 years and love every minute of it.
I bought a Triumph 1200 Trophy to get back into it before trying others (The Trophy was pretty basic 'old school', not too different from the bikes I rode in the 80's)
I did the bikesafe course in Devizes and it is well worth doing.