Okay I have been developing rudimentary websites and now I want to explore membership type websites so I could sell a service and have subscribers etc... where should I start??
since you are interested in selling services online then your should consider developing and integrating payment gateways in your site..to find technical help..google it. and for supporting user loging etc..there are technologies like .net, jsp, php with any of the databases like mysql, oracle etc..will do the work.