kingashu

u can get access to mit videos and also u can go for nptel videos, some of them are also quite informative

there is no limit on the number of languages u want to learn, i'll tell u from my past experiences -In some parts of europe, still few firms are working on Pascal, -Still fortran is a part of physics education group and is taught to practically every physics student who go for higher studies -c#, java is favored for web development and some other purposes -c, cpp still are core languages for device drivers, robotics, compilers, and many other -HDLs such as verilog, vhdl are for compiler again and also for computer organization -Depending on your interest, start reading from a side, long way to go