We have some people working remote and it´s difficult to include them. But we skype with them for face-to-face meetings and at the beginning, everyone is saying something about himself. I would also recommend communicating via Chat like Slack or something similar. If there is an upcoming team event I would also consider to send them an invitation regardless if they are able to come but they might feel more like they are welcome. We also give them a briefing with some research tasks to get to know the company and the new job. Afterwards, the team leader will get in touch with them, explain everything and help them settle down into the team.

For collaboration, task management and project management we use our own tool Zenkit (https://zenkit.com). It´s easy to get started because you can use different views. If you used another tool, it´s more likely that you want to use the same view in Zenkit to get started.