What are the things to take care of while coding and designing of my web site, for bringing it into top of google search results?

for searching resuts use Metadata in your HTML, let it contain all the possible words that ther sercher might use to reach your website as the following example:

<meta name="keywords" content=" nursery, camps, preschool, winter camp, summer camp, toddler nursery" />

you can put in the content property all the possible words that the searcher might use and at the same time these words express your website function and services (related to your website subject)

nothing specific to take care in your coding to bring your website at the top of search list. but to bring more visitors to your website as people can tell each other>>> You can TAKE CARE of your DESIGNING>>>simple and clear designing by choosing suitable colors and clear buttons,fonts, provide the easiest way for surfing your website you have to consider the user as new in using websites by providing him the easiest and clearest way to reach his goal using your website and your services

adding services between a while will support your website too

good luck