How to use Workbench within Eclipse

Please forgive me for what is likely to be a really basic question, but I have never used either Workbench or Eclipse IDE before. I have written a Mathematica program (.nb file) which I need to optimise, and have read that using Workbench is the way to do that. I therefore followed some very clear Wolfram-provided instructions and installed Eclipse together with the Workshop plugin. The problem is that I cannot find any instructions of what to do next! Without any instructions I tried to guess what to do. Beyond creating a “new project” within Eclipse, I have not been successful at making any progress. Even the tutorial within Eclipse appears to be empty. Could someone PLEASE let me know if there are instructions I can read somewhere, specific to Wolfram Workbench under Eclipse, or generally point me in the right direction!

There are several videos on how to use Wolfram Workbench here.

Thank you Rohit. I now realise what the problem is: The current Wolfram Workbench site Wolfram Workbench: Eclipse-based IDE for Wolfram Language and its big red “Get started” link Wolfram Support Quick Answers: How do I install the Wolfram Workbench plugin for Eclipse? make a big song and dance about Eclipse IDE, yet NONE of the Wolfram help videos mention “Eclipse” at all. Only after carefully “pattern matching” the help video screen shots with the actual Eclipse IDE window (the two are NOT identical) have I convinced myself that I may be able to apply the help videos after all.