The game can be confusing at first, as very little is spelled out, but I'll try to answer any questions you have. First, you start with only one Warframe. To get others, you must complete assassination missions on the various planets and moons. This will reward you with Warframe part blueprints, as well as nav segments that unlock other planets and moons. Each assassination mission gives you one warframe part blueprint for a specific Warframe: ex. Alad V on Jupiter gives parts for Valkyr. These blueprints can be used in the foundry to build the warframe part. Any blueprints (warframe parts, weapons, consumables) that you acquire will appear in your foundry. They require a specific amount of resources to build, as well as a certain amount of time to complete, and some credits. Each planet or moon has 4 types of resource materials that you can earn by killing enemies and raiding loot chests. Warframes require 5 things to build: the helmet, chasis and systems for the frame, a small amount of a rare resource, and the main warframe blueprint (which can be purchased in the market with credits). It's also important to note, there are items in the market that can be purchased with credits, and ones that can be purchased with platinum. Platinum is the games purchasable money, and can be used for almost anything. You are given a small amount to start with, and it is best to save it for only those things that you really want or need. [u]Nearly everything in the game can be earned without spending platinum, the exception being inventory space(Warframe slots, weapons slots), which can only be extended with platinum.[/u] I recommend using it primarily for this. Hope that helps you get started. The Warframe wiki page is also a good source of info if you need it. http://warframe.wikia.com/wiki/WARFRAME_Wiki