For a 2024 return, 1.) The first thing you want to do is get a transcript for yourself. You can do this here: Get Transcript2.) Then, read the 1040 instructions for the year you want to file:Form 1040 Instructions for 2024 3.) Then, you can either A) Buy tax prep software like:Turbotax: 2024 Tax Preparation for Past Yearsu2024 TaxesAmazon.com: H&R Block Tax Software 2024 Deluxe [OLD VERSION]: Software...among others.B) Or, you can download forms from the IRS page itself depending on what you need. Form 1040 - Main Form. You may need to attach additional schedules only if applicable.Schedule A - For Itemizing Deductions Schedule C - To declare business income and expensesSchedule SE - To calculate self-employment taxes Schedule E - Tou00a0 declare rental real estate income and expensesPrior Year Products - Complete list...among othersAnd, prepare your State tax return if applicable. You should also be able to download the necessary forms from your State's Department of Revenue website. For example, if you live in Illinois, you can get those forms here: 2024 Individual Income Tax Forms for Illinois