Wordpress is an eldorado for a webdesinger. There is SO much you can do in Wordpress, and the reason for that is that there are thousands of add-ons/plugins. If you need a booking module, you can select and choose plugins that you can install and use.
It may sound pretty cool with many plugins to choose from, but sometimes it can cause conflicts as not all plugins are compatible with each other. It can cause your website to look weird or it might just crash. To find out which plugin caused the problem, you usually have to disable one plugin and another until you find out which of them created the problem.
Fortunately, it is possible to disable and activate a plugin without losing any data, so it is completely safe to do. It also makes it pretty easy to test out a plugin to see if it works with the others and that it has the features you're looking for. If it is not, you can delete it again without any damage.
You have a need and need a plugin that takes care of it. When searching, it comes up page after page with current and not so relevant plugins. But, how do you know which one to choose?
A good starting point is to check when it was last updated. If you are between two where one was updated 6 months ago and one that was updated 2 weeks ago, you should choose the latter. It's a good sign that the plugin is still looked after by the people who made it.
The next thing is to see if it has been tested out with your version of Wordpress. It may work fine in spite of that, but it is absolutely essential to try one that has been tested.
Also, always read what is written about the plugin before installing it. Check if the free version gives you what you need or if you need to go for a paid pro version. If you have to pay to get the feature you need, then check out some other plugins as well before paying for the pro version. It happens that some give for free what others charge for.
Also look at what other people write about it and how many stars they give it. If everything looks good, you can install it.
Then check that the website is working properly.
Using a lot of plugins can make your website slow, as there is a lot of data that needs to be retrieved from the server before the page can finish loading. The solution to the problem may be to not use as many plugins. Or to download a plugin to, which, takes care of the problem by overloading data into a quick memory - a cache in your browser/browser. So instead of retrieving all the data again, it uses what's in the cache, which is much faster. It also minimizes Javascript and CSS files so that they merge instead of loading separately. Uploading one file is faster than uploading several.
You can clear the cache if you need to. Either by going to settings in the browser you are using and deleting there, but you can also do that by using CTRL + SHIFT + DELETE. Please note that if you were logged in somewhere, you will need to log in again.