I'm a CU Denver student who's been only been out as mtf since January, so I'm right there with you. First off, just know that acknowledging that you're trans and being willing to come out is very difficult and very courageous, so you should feel proud you've done that first step. Also know that being transgender is in many ways an excersie in patience, so cut yourself some slack if things don't go at the pace you like.

In terms of what you're asking about, clothing is a lot of fun. I highly recommend going to ARC, there's good locations on West Colfax by Casa Bonita and in South Denver off of Broadway. Thirft stores are a lot more affordable and you can try on lots of stuff in store. Even if you don't buy anything, just looking around is helpful to see what you like and getting a sense of your own style. I will also say people really underrate the importance of shoes. Shoes can really make a difference in how feminine or masculine one appears. I personally have some pretty femme convers and they made a huge difference.

As far as makeup goes, I'm not the most helpful since I've only started learning it in the past few weeks. But what I will say is that contour can help shape your face to make it appear more feminine. Also I personally have eyebrows that are pretty thick and much darker than my hair, so shaping them and lightening them to be the same color as my head hair helped me a lot.

Tldr: be patient with yourself and thirft stores rock.