A common FPGA mistake is selecting the device first and considering tools and IP later. Toolchain planning should begin during architecture definition. Altera lists resources such as Quartus Prime, power and thermal analysis, simulation tools, Open FPGA Stack, development kits, documentation, and example designs. These affect timing closure, power estimation, interface verification, and software integration. Projects should confirm licensing, simulation models, reference designs, board resources, IP versions, and maintenance plans early. For production systems with long lifetimes, tool stability, documentation, and lifecycle support can be more important than a single performance number.