There are hundreds of ways to get leads, and the abundance is what stops people rather than any shortage. The clearest advice across these four posts is to pick two at most and stay with them for ninety days or until one of them works, which is unfashionable and probably right.
The rest is hands on. A step by step tour of the keyword research tool includes the detail that logging in first changes both what you are shown and how much of it. A list of plugins worth installing carries the point that most blogs go unread because they were set up badly rather than written badly. A walk through LinkedIn treats it as a way to find and approach people instead of a place to park a profile.
This is a small shelf and it does not pretend otherwise. If you have spent months collecting strategies and starting none of them, take the lead generation post first and then close the other tabs.