The most important first step is to decide how much you want to invest. This decision should be independent of what investment vehicles are available to you and more tied to what your savings goals are and how long you have until you need the money.
For the sake of discussion, let's say this amount is $15K per year.
You'll want to take advantage of the tax-advantaged accounts like the 401k or a Roth IRA because of the long term benefits.
Very common advice for which retirement accounts to fund looks like this: Invest money in these categories until you run out of money.
- 401k Up to Match
- Roth IRA up to Yearly Maximum
- 401k Up to Yearly Maximum.
- Taxable investments
If you followed this advice, you would invest $0 in 401k up to the match because you don't have a match. You would invest in a Roth IRA up to $5500 (yearly max) and then into your 401k an additional $9500 ($15K - Roth contribution)
This approach gives you a blend of pre-tax (401k) and post-tax (roth) investments.
If you are in a higher tax bracket now, it may make more sense to invest like this:
- 401k Up to Yearly Maximum
- Roth IRA up to Yearly Maximum
- Taxable investments
In which case you'd invest $15K in the 401k and call it good because you never got out of investment category 1.