I have included three picture examples to explain how to install a bidet in your house or apartment.
The first picture is a handheld spray hose type bidet that has a hanger to mount on the toilet tank by raising the lid and hanging on the tank and then replace the lid. If you choose this type you would need a two tools, a pair of pliers or crescent wrench or channel locks any combination of these. Then you would turn off the water and attach the adapter per the instructions, then connect the hose etc. here is a link to this type https://www.amazon.com/Fuentes-300-Function-Stainless-Attachment/dp/B01MXOG8RB/ref=sr_1_6?ie=UTF8&qid=1488498660&sr=8-6&keywords=spray+hose+bidet
The second is a bidet that you mount under your toilet seat and only takes a large screw driver, and again a couple pairs of pliers to install this one per the instructions. Here is a link to this type https://www.amazon.com/Astor-Non-Electric-Mechanical-Attachment-CB-1000/dp/B003TPGPUW/ref=sr_1_5?s=kitchen-bath&ie=UTF8&qid=1488499177&sr=1-5&keywords=bidet
The third picture is an adapter only. Install this one per the instruction using the same tools as in the first example and the you can buy any type hose you like to put on the adapter (this route is a little cheaper than the first). here is a link to the adapter, https://www.amazon.com/T-adapter-Shut-off-Connector-Handheld-Polished/dp/B00JIG4AGM/ref=sr_1_15?ie=UTF8&qid=1488498794&sr=8-15&keywords=spray+hose+bidet+adapter
All of these are easy to install and can be completed in less than 30 minutes, make sure to turn off the water before you start.