Here are three main pieces of equipment or components you will need to help build an HF antenna, or in fact any antenna. By help I mean tune.
1) This is a very expensive piece of equipment even though prices have dropped over the years. It's an Antenna Analyzer.
Now, they come in all shapes and sizes so be very careful what you get. For instance some cover all the bands, were as some are just VHF & UHF. You can get them in kit form now and build them yourself if you feel competent enough and they are very cheep.Imported so watch for the import charge. Be careful!
2) If you cannot afford an Analyzer a "GDO" will do (Google it). For those that don't know what it is. it's a half-way house between a Analyzer and a VSWR meter. It comes with little coils which covers the HF bands which includes the "WARC" bands you want to tune your antenna to
3) Is a VSWR meter.. I have used only a unit such as this many times when i first got in to Ham radio. It's a well worked format and a learning curd. So good luck. (I did use a tuner). One word of warning. Dont just rely on a VSWR meter. A length of feeder can show as a 1.5.1 VSWR.
4) This is ride by the seat of your pants!.time..... Again, something I have done. Things have worked more by luck then good judgment, but worked anyway. A nail will work, but will it be resonant, one doubts. as the wife says "Size matters" so check you cable, check your lengths and check your feeder. Good luck on whatever route you use.
If you are going to use 3 and 4 I would advise you use QRP but its your choice. Go steady! enjoy the hobby! If unsure ASK there is no such thing as a "STUPID QUESTION"
Always have a go! it`s amazing when it works.