I want to archieve the silver/gold badges but not sure how to. It would be lovely to have a roadmap/guid-lines for new users like me to follow. Are there ones?
Fair warning: I'm assuming you mean "achieve" not "archive".
There isn't a roadmap or guide to getting the badges. The idea is just to use the site and be surprised when you get a badge.
Aside from that, just read through the badges page and you'll see how to get each badge that is available.
There is also this page that you can use to see what the badges are.
You can do a few things:
There are a lot of badges, some are easy some are very hard, some require a bit of luck. If you really want to go for gold, the easiest way is to be active for 100 days in a row. But you can also become an expert in a certain field to get the 1000+ upvotes needed to get the expert badge.
But beware, badges are just the sugar on the pie. Its fun to collect as much as possible, but Q&A is still the main part of the site.
By the way, as you have several accepted answers with 0 score, you may expect the unsung hero badge soon.