Update README.md

README.md

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-Community of researchers interested in **OpenBuddy Early Access**.
+This is an independent group for researchers interested in OpenBuddy Early Access. Please note that this group is not officially associated with the OpenBuddy team.
 
-Please note that this is **not** an official group for OpenBuddy, and the members have no affiliation with the OpenBuddy team.
+All independent researchers are invited to join by clicking **"Request to join this org"** on this page. 
 
-Every independent researchers can apply to join and access our early-access models by submitting the following form: 
+After sending your request, please fill out the application form.
 
 https://forms.gle/tRjvhUQK2jY5e2ND7
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+We offer early access to OpenBuddy models, as well as the Base series models, in this group. 
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+The Base series models possess equivalent cross-language capabilities but are not fully fine-tuned for general conversations. They may be more suitable for further fine-tuning in specific domain applications.