The title really says it all. I want to design a poster for my home. But here's my question, if I lay out the text in photoshop, save it and then print it - will the text look pixelated? Or sharp enough like how in posters text normally does?
If you're sending it to be printed, then save the file as a Photoshop PDF. All your vector information, including text, will remain vector.
It depends on the resolution you create the photoshop files as. If it's a high enough resolution, the pixels are small enough that your eyes won't see them as individual pixels.
For photographic imagery being printed, the typical resolution is 300ppi (pixels per inch). For line art and type, 600ppi is likely a minimum resolution. 1200ppi being typical for higher-end printing.
I'd do a test print at 300ppi and increase the resolution up until you think it looks good.