For everyone starting in meditation practice all we need is an open mind and a willingness to put it into practice, and this remains so as we continue.
If you would find it helpful to have a bit more background, here are a few free additional sources:
Sitting Buddha, by Rev Master Daishin Morgan, former Abbot of Throssel Hole Buddhist Abbey, gives a short introduction to Zen Buddhism and sitting meditation (zazen) as practised at Throssel Hole. Buddhist Abbey. Downloadable on https://throssel.org.uk/sitting-buddha-book/ free of charge.
Buddhism From Within: an intuitive introduction to Buddhism, Shasta Abbey Press 2003, offers Rev Master Daizui MacPhillamy’s unique perspective on Buddhism and Buddhist practice. He was head of the Order of Buddhist Contemplatives from 1996 – 2003. Downloadable on: https://shastaabbey.org/pdf/BuddhismFromWithin.pdf free of charge. [It can also be purchased as a paperback on https://www.lulu.com/search?q=buddhism+from+within&adult_audience_rating=00 ]
An issue focusing on meditation, of the Journal of the Order of Buddhist Contemplatives, Spring 2020, comprises a range of articles on meditation (zazen / serene reflection meditation) with links to further resources. Downloadable on https://journal.obcon.org/past-issues/the-spring-2020-meditation-journal/ free of charge.
Various downloadable Dharma talks are available from the Throssel Hole Buddhist Abbey website on https://throssel.org.uk/dharma-talks/ See particularly the tabs ‘introductory’ and ‘general’.