First of all I wanted to “Congratulate” you for thinking about retirement at early stage.
It would be great if we start investing in equities directly. Having said that gain knowledge in screening stocks . There are N number of blogs and forums which will help us gain the knowledge.
Safe investments include PPF,VPF . We would be getting EPF contribution from employer for this purpose but most of us forget that we can increase that contribution through VPF which will earn interest above 8%. 8% may look small at this moment but considering 20 years above horizon will generate good amount.
Coming to your 20-30% CAGR , In healthy times like current scenario known stocks would generate returns above 14% -20% when entry point is favorable.
Caution : Enthusiasm will be there during initial months where people follow stock recommendations blindly . So even if anyone recommends a stock we should be in a position to do our own research and come to a conclusion that the recommendation is correct. Most of the recommendations in websites or TV channels will only talk about short term so don’t fall in that trap .
For first 6 months at least pick few stocks(4 to 5 from different segments) where you wanted to invest ,
Assume as if you have invested in them virtually or own few shares say 500 for each segment and observe the stock prices for next 6 months with respect to the market changes and macro economic conditions . This will let us know our reaction towards the market and holding mentality.
Happy investing .