Non certified or Certified really does not matter. From the implementation and support project point of view, a complete package of knowledge and skill is required in the respective solution.
If you want to learn SAP MM from scratch, then here's the right video for you:
If you are more into reading, then do check out this material provided by Intellipaat:
Note that there is no concept of fresher in the sap world even you are certified. I would like to add that it's always difficult to get your first break in sap but it's not impossible at all. In fact, you can start your career in sap as a tester or an end-user and then you can move into the next phase. Opportunities are there everywhere, you should just know how to get it.
Keep on working towards it, until you make it!