Hi there, and welcome.
In general, proper investment strategies begin with retirement accounts. This means an employer 401k/403b plan (if applicable), or a Roth/Traditional IRA account. You want to ensure you're saving properly for retirement before you do more targeted, higher risk investments.
A safe rule of thumb is to create your financial plan in this order of priority. Don't do a lower item on the list until you complete the items above it.
1) Emergency Fund. Eliminating all debt, saving for retirement, investing, etc. means nothing if you're one paycheck away from obtaining more debt or going under completely. Start with at least 1k of an EF, but try to get to at least 3 months of living expenses (you'll want to increase to 6+ later on). This money is only to cover a job loss and/or a medical emergency. This isn't to buy new toys with.
2) Get out of debt. Make sure all credit card, student loans, auto loans, etc. are eliminated. For you, it sounds like this may need to be tweaked to limit the amount of student loans you obtain as much as possible.
3) If your employer has a 401k match, contribute enough to that plan to get your match. So if your employer will match 4% at 100% if you contribute 4%, then contribute 4% to your 401k.
4) Next, open a Roth IRA account and try to hit your yearly cap of 5k (this will decrease and eventually go to $0 as your income grows, so take advantage of it while you're young).
5) If you can still save more, then go back to your 401k (assuming the fees are reasonable) until you hit your yearly max of $16,500.00
6) Now you can start focusing on riskier investments. This may be in direct stock purchases, real-estate, business ventures, etc.
Essentially, you want to be very careful about jumping to #6 without having 1-5 in place first. It's good to have risk in your portfolio, but you want to ensure you're focusing on the basics first. If you don't, you could find yourself without retirement funds in a few decades.
Hope this helps!