has editorials but the problem is that it shows the editorials for a particular contest(and i cant find which contest does a particular problem belong to)
You can go to old SRM and solve problems according to their points. Start with div2 1000 point as you are 6* here. Then if it’s easy move to div 1.
I created account on topcoder just 2-3 days before. The interface is confusing but i like that we don’t have to care about taking input and just implement the method.
To access the first website, login on topcoder website i.e. not from that page. They post new editorials here. And for super old SRM, you can find their editorials here.