If you want to add or edit text in a PDF file you're going to need a PDF editor now if you can't afford Adobe Acrobat Pro well there's some links to some free editors in the resources section of this article but for now I'm gonna stick with Adobe Acrobat Pro because all of these PDF editors act essentially the same way now first I'm going to open a file by clicking on file open selecting my file and clicking open and here we are now you can't just start putting your cursor where you want and typing first you need to click on the edit PDF and that will switch you into edit mode now if you want to make a change just put your cursor where you like and make a change now if you want to start a new box you can just click on add text and click and drag to create a new box or just simply click somewhere there already is in a box and that'll start a whole new text section for you and that's all you need to do in order to add or edit text in a PDF file.