I am running one myself and it mostly has replaced my normal search engine use. Image search is possible but incredibly slow, it often is easier to just go to Google or duckduckgo instead.
Some of the search engines will quickly limit you if you search more often, you better check out which ones work for you and which don’t. If I want to buy products of any kind I normally use Google as I noticed I never get any good results.

I want my wife to be able to use it without having to install anything