What Should i do to excel in part modelling? want to increase my excellence and speed in modelling parts where i could get drawings of different parts?
In my opinion: dive in to it. Start with a simple program like sketch-up and master the basics.
Then choose a professional program, depending on your goal (technical drawing, commercial presentation, what your clients use etc...)
Set yourself some goals (drawings you wish to make, regardless how complex they seem) and try to model those.
Do not settle for compromises in your drawing, but try to get an elegant solution for a drawing problem that occurs. When problems cannot be solved easily, check the internet or the software designer for help. Add the same principle on the rendering part and you will get amazing results.
The first drawings will cost a lot of time to finish, but the more you use a program, the faster you will get. do not get frustrated when a result is not as it should be and simply... try again.
PS: When you're getting started: save all drawings you make under some kind of archive: you might need them -or parts of them- again to implement in another drawing.
Here's a few suggestions that will give you a great start in the right direction.
1. If you haven't done it yet, go through all the tutorials provided. 'Help'>'Solidworks Tutorials' particularly the Getting Started, Basic Techniques, and Advanced Techniques sections. Even if you've been at it a while, there is good stuff to glean from them and they add new tutorials on occasion. I just noticed one now 'mouse gestures' that I've never seen and I'm going to check it out after I get done with this answer.
2. Become an expert at debugging and repairing a model when it breaks. Things tend to break for a reason, leaving a cascade of errors in the model. So many people just brute force their way through an entire model tree of blood when the root cause of the problem was easily fixed.
3. Learn about and embrace 'top down' design methodology. It will save you more headaches than you ever imagined possible. The 'Molded Product Design' tutorial is a good place to get a feel for it. The idea is to utilize a 'top level' base model which captures envelopes, part to part interfaces and "design intent". The base model in turn drives the downstream detailed parts.
4. There's thousands of Youtube videos and other online resources which can be quite valuable, so don't forget to look on the web.
5. Goes without saying, practice, practice, practice! Make many models and try to break them, and most importantly never give up, there's almost always a way to model anything you can imagine. Whenever you hear someone say 'the CAD won't let me do this or that', what it really means is they simply don't know how, and don't want to bother figuring it out.