Methylation in textbook or Wikipedia may be a good starting point.
Could not find anything related on wikpedia.
If there's a website I can learn more about this I would really appreciate if you could link it.
I know there are a lot of websites comparing Sn2/Sn1/E1/E2 rxn but havent seen any of the like for methylating agents.
How to chose a proper methylating agent so to speak. Depending on substrate that will be methylated and solvent of choice or if there's a solvent free rxn.