At age 25, the safe thing is to save money for your immediate and upcoming life expenses first (wedding, bto etc.)

After you have some runway for all those things, then the next thing would be to consider stock investments. Stocks have historically had the best rate of return over a long time since companies are generally quite productive.

The only thing is to educate yourself and not buy bad stocks for investment. I run a free investment education blog at .humjiinvestor.com for people without finance background to pick up the basics. It touches on all the small things to keep note of before investing.