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From the beginning you should download the Tor browser
In order to keep your private life separated from your public life, it’s a good idea to develop alternative identities, at least two, your “real” identity for keeping in touch with close friends and relatives, and at least one (but you can have many) next to it for your “official” public life.

If you are very exposed and visible with your public activities, e.g. talking at conferences, writing for a newspaper with your real name, teaching, etc, you may want to flip that around: develop a “real” identity in connection with your public activities and a “fake” identity for your private life. Anyone who wants to attack you will have access to your public identity, but without any link to your private life.
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